Preferably use QStringRef::toInt().

Avoid allocations for converting to int.

Change-Id: Id8c79334f4809ec075ffe7e6b7635be4873eafd8
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>

src/libs/languageutils/componentversion.cpp

@@ -52,10 +52,10 @@ ComponentVersion::ComponentVersion(const QString &versionString)
     if (dotIdx == -1)
         return;
     bool ok = false;
-    int maybeMajor = versionString.left(dotIdx).toInt(&ok);
+    int maybeMajor = versionString.leftRef(dotIdx).toInt(&ok);
     if (!ok)
         return;
-    int maybeMinor = versionString.mid(dotIdx + 1).toInt(&ok);
+    int maybeMinor = versionString.midRef(dotIdx + 1).toInt(&ok);
     if (!ok)
         return;
     _major = maybeMajor;

src/libs/qmljs/qmljstypedescriptionreader.cpp

@@ -108,8 +108,8 @@ void TypeDescriptionReader::readDocument(UiProgram *ast)
     const QString versionString = _source.mid(import->versionToken.offset, import->versionToken.length);
     const int dotIdx = versionString.indexOf(QLatin1Char('.'));
     if (dotIdx != -1) {
-        version = ComponentVersion(versionString.left(dotIdx).toInt(),
-                                   versionString.mid(dotIdx + 1).toInt());
+        version = ComponentVersion(versionString.leftRef(dotIdx).toInt(),
+                                   versionString.midRef(dotIdx + 1).toInt());
     }
     if (version.majorVersion() != 1) {
         addError(import->versionToken, tr("Major version different from 1 not supported."));

src/libs/qmljs/qmljsutils.cpp

@@ -79,7 +79,7 @@ QColor QmlJS::toQColor(const QString &qmlColorString)
     QColor color;
     if (qmlColorString.size() == 9 && qmlColorString.at(0) == QLatin1Char('#')) {
         bool ok;
-        const int alpha = qmlColorString.mid(1, 2).toInt(&ok, 16);
+        const int alpha = qmlColorString.midRef(1, 2).toInt(&ok, 16);
         if (ok) {
             QString name(qmlColorString.at(0));
             name.append(qmlColorString.right(6));

src/plugins/android/androidconfigurations.cpp

@@ -347,7 +347,7 @@ void AndroidConfig::updateNdkInformation() const
     QDirIterator it(path.appendPath(QLatin1String("platforms")).toString(), QStringList() << QLatin1String("android-*"), QDir::Dirs);
     while (it.hasNext()) {
         const QString &fileName = it.next();
-        m_availableNdkPlatforms.push_back(fileName.mid(fileName.lastIndexOf(QLatin1Char('-')) + 1).toInt());
+        m_availableNdkPlatforms.push_back(fileName.midRef(fileName.lastIndexOf(QLatin1Char('-')) + 1).toInt());
     }
     Utils::sort(m_availableNdkPlatforms, std::greater<int>());
 
@@ -907,7 +907,7 @@ QString AndroidConfig::getAvdName(const QString &serialnumber)
     if (index == -1)
         return QString();
     bool ok;
-    int port = serialnumber.mid(index + 1).toInt(&ok);
+    int port = serialnumber.midRef(index + 1).toInt(&ok);
     if (!ok)
         return QString();
 

src/plugins/android/androidtoolchain.cpp

@@ -318,7 +318,7 @@ QList<int> AndroidToolChainFactory::versionNumberFromString(const QString &versi
             index = end;
 
         bool ok;
-        int v = version.mid(start, index - start).toInt(&ok);
+        int v = version.midRef(start, index - start).toInt(&ok);
         if (!ok) // unparseable, return what we have
             return result;
 

src/plugins/autotest/testoutputreader.cpp

@@ -48,7 +48,7 @@ static QString decode(const QString& original)
     while ((pos = regex.indexIn(original, pos)) != -1) {
         const QString value = regex.cap(1);
         if (value.startsWith(QLatin1Char('x')))
-            result.replace(regex.cap(0), QChar(value.mid(1).toInt(0, 16)));
+            result.replace(regex.cap(0), QChar(value.midRef(1).toInt(0, 16)));
         else
             result.replace(regex.cap(0), QChar(value.toInt(0, 10)));
         pos += regex.matchedLength();

src/plugins/bookmarks/bookmarkmanager.cpp

@@ -809,7 +809,7 @@ void BookmarkManager::addBookmark(const QString &s)
     if (index3 != -1 || index2 != -1 || index1 != -1) {
         const QString &filePath = s.mid(index1+1, index2-index1-1);
         const QString &note = s.mid(index3 + 1);
-        const int lineNumber = s.mid(index2 + 1, index3 - index2 - 1).toInt();
+        const int lineNumber = s.midRef(index2 + 1, index3 - index2 - 1).toInt();
         if (!filePath.isEmpty() && !findBookmark(filePath, lineNumber)) {
             Bookmark *b = new Bookmark(lineNumber, this);
             b->updateFileName(filePath);

src/plugins/clearcase/clearcaseplugin.cpp

@@ -1134,7 +1134,7 @@ void ClearCasePlugin::diffActivity()
             // pre-first version. only for the first occurrence
             if (filever[file].first.isEmpty()) {
                 int verpos = shortver.lastIndexOf(QRegExp(QLatin1String("[^0-9]"))) + 1;
-                int vernum = shortver.mid(verpos).toInt();
+                int vernum = shortver.midRef(verpos).toInt();
                 if (vernum)
                     --vernum;
                 shortver.replace(verpos, shortver.length() - verpos, QString::number(vernum));

src/plugins/cvs/cvsutils.cpp

@@ -231,8 +231,8 @@ QString previousRevision(const QString &rev)
     const int dotPos = rev.lastIndexOf(QLatin1Char('.'));
     if (dotPos == -1)
         return rev;
-    const int minor = rev.mid(dotPos + 1).toInt();
-    return rev.left(dotPos + 1) + QString::number(minor - 1);
+    const int minor = rev.midRef(dotPos + 1).toInt();
+    return rev.leftRef(dotPos + 1) + QString::number(minor - 1);
 }
 
 // Is "[1.2...].1"?

src/plugins/debugger/debuggertooltipmanager.cpp

@@ -898,7 +898,7 @@ void DebuggerToolTipHolder::positionShow(const TextEditorWidget *editorWidget)
 static QDate dateFromString(const QString &date)
 {
     return date.size() == 8 ?
-        QDate(date.left(4).toInt(), date.mid(4, 2).toInt(), date.mid(6, 2).toInt()) :
+        QDate(date.leftRef(4).toInt(), date.midRef(4, 2).toInt(), date.midRef(6, 2).toInt()) :
         QDate();
 }
 

src/plugins/debugger/sourceutils.cpp

@@ -349,7 +349,7 @@ ContextData getLocationContext(TextDocument *document, int lineNumber)
             if (!fileName.isEmpty()) {
                 // Possibly one of the  "27 [1] foo = x" lines
                 int pos = line.indexOf(QLatin1Char('['));
-                int ln = line.left(pos - 1).toInt();
+                int ln = line.leftRef(pos - 1).toInt();
                 if (ln > 0) {
                     data.type = LocationByFile;
                     data.fileName = fileName;

src/plugins/fakevim/fakevimhandler.cpp

@@ -5465,7 +5465,7 @@ bool FakeVimHandler::Private::handleExSubstituteCommand(const ExCommand &cmd)
     QString line = cmd.args;
     const int countIndex = line.lastIndexOf(QRegExp(_("\\d+$")));
     if (countIndex != -1) {
-        count = line.mid(countIndex).toInt();
+        count = line.midRef(countIndex).toInt();
         line = line.mid(0, countIndex).trimmed();
     }
 

src/plugins/git/gerrit/gerritpushdialog.cpp

@@ -109,7 +109,7 @@ void GerritPushDialog::initRemoteBranches()
             continue;
         const QString ref = entries.at(0).mid(remotesPrefix.size());
         int refBranchIndex = ref.indexOf(QLatin1Char('/'));
-        int timeT = entries.at(1).left(entries.at(1).indexOf(QLatin1Char(' '))).toInt();
+        int timeT = entries.at(1).leftRef(entries.at(1).indexOf(QLatin1Char(' '))).toInt();
         BranchDate bd(ref.mid(refBranchIndex + 1), QDateTime::fromTime_t(timeT).date());
         m_remoteBranches.insertMulti(ref.left(refBranchIndex), bd);
     }

src/plugins/git/stashdialog.cpp

@@ -243,7 +243,7 @@ static inline QString nextStash(const QString &stash)
     if (closingBracePos == -1)
         return QString();
     bool ok;
-    const int n = stash.mid(openingBracePos + 1, closingBracePos - openingBracePos - 1).toInt(&ok);
+    const int n = stash.midRef(openingBracePos + 1, closingBracePos - openingBracePos - 1).toInt(&ok);
     if (!ok)
         return QString();
     QString rc =  stash.left(openingBracePos + 1);

src/plugins/projectexplorer/abi.cpp

@@ -445,7 +445,7 @@ Abi::Abi(const QString &abiString) :
             return;
 
         bool ok = false;
-        int bitCount = bits.left(bits.count() - 3).toInt(&ok);
+        int bitCount = bits.leftRef(bits.count() - 3).toInt(&ok);
         if (!ok)
             return;
         if (bitCount != 8 && bitCount != 16 && bitCount != 32 && bitCount != 64)
@@ -830,7 +830,7 @@ QList<Abi> Abi::abisOfBinary(const Utils::FileName &path)
             const QString fileName = QString::fromLocal8Bit(data.mid(0, 16));
             quint64 fileNameOffset = 0;
             if (fileName.startsWith(QLatin1String("#1/")))
-                fileNameOffset = fileName.mid(3).toInt();
+                fileNameOffset = fileName.midRef(3).toInt();
             const QString fileLength = QString::fromLatin1(data.mid(48, 10));
 
             int toSkip = 60 + fileNameOffset;

src/plugins/projectexplorer/abstractmsvctoolchain.cpp

@@ -375,9 +375,9 @@ AbstractMsvcToolChain::WarningFlagAdder::WarningFlagAdder(const QString &flag,
     }
     bool ok = false;
     if (m_doesEnable)
-        m_warningCode = flag.mid(2).toInt(&ok);
+        m_warningCode = flag.midRef(2).toInt(&ok);
     else
-        m_warningCode = flag.mid(3).toInt(&ok);
+        m_warningCode = flag.midRef(3).toInt(&ok);
     if (!ok)
         m_triggered = true;
 }

src/plugins/projectexplorer/devicesupport/localprocesslist.cpp

@@ -210,7 +210,7 @@ static QList<DeviceProcessItem> getLocalProcessesUsingPs()
                 if (cmdSep > 0) {
                     const int argsSep = cmdSep != -1 ? line.indexOf(blank, cmdSep + 1) : -1;
                     DeviceProcessItem procData;
-                    procData.pid = line.left(pidSep).toInt();
+                    procData.pid = line.leftRef(pidSep).toInt();
                     procData.cmdLine = line.mid(cmdSep + 1);
                     if (argsSep == -1)
                         procData.exe = line.mid(cmdSep + 1);

src/plugins/projectexplorer/msvcparser.cpp

@@ -47,7 +47,7 @@ static QPair<Utils::FileName, int> parseFileName(const QString &input)
         int pos = fileName.lastIndexOf(QLatin1Char('('));
         if (pos >= 0) {
             bool ok = false;
-            int n = fileName.mid(pos + 1, fileName.count() - pos - 2).toInt(&ok);
+            int n = fileName.midRef(pos + 1, fileName.count() - pos - 2).toInt(&ok);
             if (ok) {
                 fileName = fileName.left(pos);
                 linenumber = n;

src/plugins/projectexplorer/msvctoolchain.cpp

@@ -642,7 +642,7 @@ QList<ToolChain *> MsvcToolChainFactory::autoDetect(const QList<ToolChain *> &al
         QString path = QDir::fromNativeSeparators(vsRegistry.value(vsName).toString());
         if (path.endsWith(QLatin1Char('/')))
             path.chop(1);
-        const int version = vsName.left(dotPos).toInt();
+        const int version = vsName.leftRef(dotPos).toInt();
         const QString vcvarsAllbat = path + QLatin1String("/vcvarsall.bat");
         if (QFileInfo(vcvarsAllbat).isFile()) {
             QList<MsvcToolChain::Platform> platforms; // prioritized list

src/plugins/projectexplorer/settingsaccessor.cpp

@@ -2005,7 +2005,7 @@ UserFileVersion11Upgrader::~UserFileVersion11Upgrader()
 
 static inline int targetId(const QString &targetKey)
 {
-    return targetKey.mid(targetKey.lastIndexOf(QLatin1Char('.')) + 1).toInt();
+    return targetKey.midRef(targetKey.lastIndexOf(QLatin1Char('.')) + 1).toInt();
 }
 
 QVariantMap UserFileVersion11Upgrader::upgrade(const QVariantMap &map)